Design and shape optimization of interior permanent magnet synchronous machine based on hybrid cores

Author:

Zhang Shiwei11,Huang Xiaorui2,Liu Rongmei11,Liu Chengcheng11,Wang Shaopeng11,Wang Youhua11

Affiliation:

1. , Hebei University of Technology, , China

2. , China

Abstract

By designing stator teeth using grain-oriented sheets (GO) and other parts still with non-grain-oriented sheets (NGO), the electromagnetic performance of the interior permanent magnet synchronous machine (GO-IPMSM) can be improved greatly. As the stator core of the designed GO-IPMSM is a hybrid core that is composed of two different silicon sheets, both the electromagnetic and mechanical performances are affected by the stator joint shape between GO and NGO sheets. Meanwhile, with the adoption of GO, the torque ripple of GO-IPMSM is increased though the average torque is increased as well. For reducing the torque ripple, optimizing the rotor barrier shape is an effective way. In this paper, the piecewise linear interpolation method is employed for establishing the stator joint shape between GO and NGO sheets, and the polynomial method is proposed to establish the rotor barrier shape. Through the analysis, it can be seen that the stator joint shape plays a strong role in affecting the mechanical performance of the GO-IPMSM, while the effect on the electromagnetic performance is weak. The genetic algorithm is used to optimize the rotor barrier shape for achieving high average torque and low torque ripple. Lastly, a quick and accurate efficiency map calculation method based on the Kriging model is proposed for GO-IPMSM with less finite element method (FEM) samples are required.

Publisher

IOS Press

Reference17 articles.

1. Research on the performances and parameters of interior PMSM used for electric vehicles;Liu;IEEE Transactions on Industrial Electronics,2016

2. Design and performance analysis of a novel synchronous reluctance machine;Wang;International Journal of Applied Electromagnetics and Mechanics,2020

3. Optimal design of an axial-flux switched reluctance motor with grain-oriented electrical steel;Ma;IEEE Transactions on Industry Applications,2017

4. Torque ripple modeling and minimization for interior pmsm considering magnetic saturation;Lai;IEEE Transactions on Power Electronics,2018

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